As someone who never took AP Psych and crammed over a weekend and got a 5, I have to agree. Of course, the AP Psych example was quoted as a reason why Dartmouth no longer gives AP credit.
“The psychology department got more and more suspicious about how good an indicator a 5 on the A.P. psych exam was for academic success,” said Hakan Tell, a classics professor who heads Dartmouth’s Committee on Instruction, so the department decided to give a condensed version of the Psych 1 final to incoming students instead of giving them credits.
Of more than 100 students who had scored a 5 on the A.P. exam, 90 percent failed the Dartmouth test. The other 10 percent were given Dartmouth credit.
http://www.nytimes.com/2013/01/18/education/dartmouth-stops-credits-for-excelling-on-ap-test.html?_r=0